The OAuth Authorize button missing in Swagger UI when native compiled with Spring Boot 3.0

[magnus-larsson]

Describe the bug

• The OAuth Authorize button missing in Swagger UI when a resource server is native compiled with Spring Boot 3.0

To Reproduce

Version used:

• spring-boot version: v3.0.4
• springdoc-openapi module and version: springdoc-openapi-starter-webflux-ui, v2.1.0

Steps to reproduce the behavior:

• Use the demo-oauth2 example in https://github.com/springdoc/springdoc-openapi-demos, branch 2.x

• Native compile the oauth-resource-server-webflux project and run it:

  cd oauth-resource-server-webflux
  mvn -Pnative clean native:compile 
  ./target/oauth-resource-server-webflux 
  

• Open the Web UI, http://127.0.0.1:8082/resource-server/swagger-ui.html, and note that the Authorize button is missing:

  

Expected behavior

• Use the same project as above, build and run it:

  cd oauth-resource-server-webflux
  mvn clean package
  java -jar target/oauth-resource-server-webflux-3.1.7-SNAPSHOT.jar
  

• Open the Web UI, http://127.0.0.1:8082/resource-server/swagger-ui.html, and note that the Authorize button is present:

  

[giacgbj]

Same issue using 3.1.0.

[uc4w6c]

It seems that native compile removes code that has no implementation in classes (even classes with only annotations).

OpenApiConfig has been removed.

It was resolved by setting @OpenAPIDefinition, @SecuritySchema. in the class with @SpringBootApplication (ResourceServerApp.java for the demo repository).

[magnus-larsson]

Hello @uc4w6c, thanks for your help and for explaining the problem!

I would prefer adding @Configuration in the OpenApiConfig - class instead of breaking the code structure to make it work when native compiled.

For details, see GraalVM Native Image Support, Source Code Generation.

Shouldn't the source code in the Spring-boot OpenAPI Demo applications be updated, e.g. the OpenApiConfig - class, before this issue is closed?
(So that the demo applications work when native compiled)

Also, maybe it is worth mentioning that adding @Configuration to @OpenAPIDefinition and @SecurityScheme is required for GraalVM native images support in the docs at https://springdoc.org?

[uc4w6c]

That's true. I will update the docs.

[bnasslahsen]

@uc4w6c,

Thanks for the update. I confirm it's now published: https://springdoc.org/#is-graalvm-supported